<template>
  <div class="container">
    <div class="app-container">
      <div class="left">
        <el-input
          v-model="queryParams.keyword"
          style="margin-bottom:10px"
          type="text"
          prefix-icon="el-icon-search"
          size="small"
          placeholder="输入员工姓名全员搜索"
          @input="changeValue"
        />
        <!-- 树形组件 -->
        <!-- highlight-current 代码高亮当前节点 -->
        <el-tree
          ref="deptTree"
          node-key="id"
          :data="depts"
          :props="defaultProps"
          default-expand-all
          :expand-on-click-node="false"
          highlight-current
          @current-change="selectNode"
        />
      </div>

      <div class="right">
        <el-row class="opeate-tools" type="flex" justify="end">
          <el-button v-permission="'add-ee'" size="mini" type="primary" @click="$router.push('/employee/detail')">添加员工</el-button>

          <el-button size="mini" @click="showExcelDialog = true">excel导入</el-button>

          <el-button size="mini" @click="exportExcel">excel导出</el-button>

        </el-row>

        <!-- 表格组件 -->
        <el-table :data="list">
          <el-table-column prop="staffPhoto" align="center" label="头像">
            <template v-slot="{row}">
              <el-avatar v-if="row.staffPhoto" :src="row.staffPhoto" :size="30" />
              <span v-else class="username">{{ row.username?.charAt(0) }}</span>
            </template>
          </el-table-column>
          <el-table-column prop="username" label="姓名" />
          <el-table-column prop="mobile" label="手机号" sortable />
          <el-table-column prop="workNumber" label="工号" sortable />
          <el-table-column prop="formOfEmployment" label="聘用形式">
            <template v-slot="{row}">
              <span v-if="row.formOfEmployment === 1">正式</span>
              <span v-else-if="row.formOfEmployment === 2">非正式</span>
              <span v-else>无</span>
            </template>
          </el-table-column>
          <el-table-column prop="departmentName" label="部门" />
          <el-table-column prop="timeOfEntry" label="入职时间" sortable />
          <el-table-column label="操作" width="280px">
            <template #default="{row}">
              <el-button size="mini" type="text" @click="$router.push(`/employee/detail/${row.id}`)">查看</el-button>

              <el-button size="mini" type="text" @click="btnRole(row.id)">角色</el-button>

              <el-popconfirm title="确认删除该行数据吗？" @onConfirm="confirmDel(row.id)">
                <el-button slot="reference" style="margin-left:10px" size="mini" type="text">删除</el-button>

              </el-popconfirm>

            </template>

          </el-table-column>
        </el-table>

        <!-- 分页 -->
        <el-row style="height: 60px" align="middle" type="flex" justify="end">
          <el-pagination
            layout="total,prev, pager, next"
            :total="total"
            :current-page="queryParams.page"
            :page-size="queryParams.pagesize"
            @current-change="changePage"
          >
            />
          </el-pagination>
        </el-row>
      </div>

    </div>
    <!-- 导入excel -->
    <importExcel :show-excel-dialog.sync="showExcelDialog" @uploadSuccess="getEmployeeList" />

    <!-- 角色弹出层 -->
    <el-dialog title="分配角色" :visible.sync="showRoleDialog">
      <!--
       roleIds 选中后的角色id数组
       roleList 所有可用的角色列表
      -->
      <el-checkbox-group v-model="roleIds">
        <el-checkbox v-for="item in roleList" :key="item.id" :label="item.id">
          {{ item.name }}
        </el-checkbox>
      </el-checkbox-group>

      <!-- 确定取消按钮 -->
      <el-row slot="footer" type="flex" justify="center">
        <el-col :span="6">
          <el-button type="primary" size="mini" @click="confirm">确定</el-button>
          <el-button size="mini" @click="showRoleDialog = false">取消</el-button>
        </el-col>
      </el-row>
    </el-dialog>

  </div>

</template>

<script>
import { getDepartments } from '@/api/department'
import { assignRole, delEmployee, exportEmployee, getEmployeeDetail, getEmployeeList, getEnableRoleList } from '@/api/employee'
import { translateListToTreeData } from '@/utils'
import FileSaver from 'file-saver'
import ImportExcel from './components/import-excel.vue'

export default {
  name: 'Employee',
  components: {
    ImportExcel
  },
  data() {
    return {
      depts: [], // 组织数据
      defaultProps: {
        label: 'name',
        children: 'children'
      },
      // 员工查询参数
      queryParams: {
        departmentId: null,
        page: 1,
        pagesize: 10,
        keyword: '' // 模糊字段搜索
      },
      list: [],
      total: 0, // 员工总数
      showExcelDialog: false, // 控制excel的弹层显示和隐藏
      showRoleDialog: false, // 角色控制弹层显示
      roleList: [], // 角色列表
      roleIds: [], // 用来双向绑定数据的
      currentUserId: null // 用来记录当前点击的用户id
    }
  },
  created() {
    this.getDepartment()
  },
  methods: {
    // 获取部门列表
    async getDepartment() {
      // 递归方法 将列表转化成树形
      const result = await getDepartments()
      this.depts = translateListToTreeData(result, 0)
      // 记录部门中的首个节点 （1）默认选中高亮 （2）拿着首个部门id，发请求，渲染右侧列表的数据
      this.queryParams.departmentId = this.depts[0].id
      console.log(this.depts)
      // 设置首个节点的选中状态
      // 树形组件的渲染是异步的
      this.$nextTick(() => {
        // 目的: 是为了保证树形组件渲染完成，才能进行节点的选中设置
        this.$refs.deptTree.setCurrentKey(this.queryParams.departmentId)
      })
      // 这个时候参数 记录了id
      this.getEmployeeList()
      this.total = await getEmployeeList(this.queryParams).then(res => res.total)
    },
    // 选中节点改变
    selectNode(node) {
      this.queryParams.departmentId = node.id // 重新记录了参数
      this.queryParams.page = 1 // 设置第一页
      this.getEmployeeList()
    },
    // 获取员工列表的方法
    async getEmployeeList() {
      const { rows, total } = await getEmployeeList(this.queryParams)
      this.list = rows
      this.total = total
      console.log(rows)
    },
    // 切换页数
    changePage(newPage) {
      this.queryParams.page = newPage // 赋值新页码
      this.getEmployeeList() // 查询数据
    },
    // 输入框输入事件
    changeValue() {
      // 单位时间内只执行最后一次
      // this的实例上赋值了一个timer的属性
      clearTimeout(this.timer) // 清除上一次的定时器
      this.timer = setTimeout(() => {
        this.queryParams.page = 1
        this.getEmployeeList()
      }, 500)
    },
    // 导出excel表格
    async exportExcel() {
      const res = await exportEmployee()
      // console.log(res)
      FileSaver.saveAs(res, '员工列表.xlsx')
    },
    // 删除员工方法
    async confirmDel(id) {
      await delEmployee(id)
      if (this.list.length === 1 && this.queryParams.page > 1) this.queryParams.page--
      this.getEmployeeList()
      this.$message.success('删除员工成功')
    },
    // 给员工分配角色
    async btnRole(id) {
      // 1. 显示dialog弹出层
      // this.showRoleDialog = true
      // 2. 查看所有可用角色列表 渲染视图
      this.roleList = await getEnableRoleList()
      // 3. 获取员工所拥有的角色信息 - 根据员工的id
      this.currentUserId = id
      const { roleIds } = await getEmployeeDetail(id)
      // 4. 赋值给选中的角色列表
      this.roleIds = roleIds
      // 注意点：调整弹层显示的时机 (目的：为了保证渲染完成之后，再显示弹层)
      this.showRoleDialog = true
    },
    // 确定分配角色
    async confirm() {
      await assignRole({
        // 1. 员工id
        id: this.currentUserId,
        // 2. 员工所拥有的角色id
        roleIds: this.roleIds
      })
      this.$message.success('分配用户角色成功')
      this.showRoleDialog = false
    }
  }
}
</script>

<style lang="scss" scoped>
.app-container {
  background: #fff;
  display: flex;

  .left {
    width: 280px;
    padding: 20px;
    border-right: 1px solid #eaeef4;
  }

  .right {
    flex: 1;
    padding: 20px;

    .opeate-tools {
      margin: 10px;
    }

    .username {
      height: 30px;
      width: 30px;
      line-height: 30px;
      text-align: center;
      border-radius: 50%;
      color: #fff;
      background: #04C9BE;
      font-size: 12px;
      display: inline-block;
    }
  }
}
</style>
